<template>
    <div class="login-container">
        <el-form
            ref="loginForm"
            :model="loginForm"
            :rules="loginRules"
            class="login-form"
            autocomplete="on"
            label-position="left"
        >
            <div class="title-container">
                <h3 class="title">Login Form</h3>
            </div>

            <el-form-item prop="username">
                <el-input
                    ref="username"
                    v-model="loginForm.username"
                    placeholder="Username"
                    name="username"
                    type="text"
                    tabindex="1"
                    autocomplete="on"
                />
            </el-form-item>

            <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
                <el-form-item prop="password">
                    <el-input
                        :key="passwordType"
                        ref="password"
                        v-model="loginForm.password"
                        :type="passwordType"
                        placeholder="Password"
                        name="password"
                        tabindex="2"
                        autocomplete="on"
                        @keyup.native="checkCapslock"
                        @blur="capsTooltip = false"
                        @keyup.enter.native="handleLogin"
                    />
                </el-form-item>
            </el-tooltip>

            <el-button
                :loading="loading"
                type="primary"
                style="width: 100%; margin-bottom: 30px"
                @click.native.prevent="handleLogin"
            >
                Login
            </el-button>

            <div style="position: relative">
                <div class="tips">
                    <span>username: admin</span>
                    <span>password: any</span>
                </div>
            </div>
        </el-form>
    </div>
</template>

<script lang="ts">
import { Component, Vue, Watch } from 'vue-property-decorator'
import { Route } from 'vue-router'
import { Dictionary } from 'vue-router/types/router'
import { Form as ElForm, Input } from 'element-ui'
import { AuthModule } from '@/store/modules/auth'

(window as any)['AuthModule'] = AuthModule

@Component({
    name: 'Login',
    components: {}
})
export default class extends Vue {
    private validateUsername = (rule: any, value: string, callback: Function) => {
        if (value.length < 5) {
            callback(new Error('The password can not be less than 5 digits'))
        } else {
            callback()
        }
    }

    private validatePassword = (rule: any, value: string, callback: Function) => {
        if (value.length < 5) {
            callback(new Error('The password can not be less than 5 digits'))
        } else {
            callback()
        }
    }

    private loginForm = {
        username: 'admin',
        password: '111111'
    }

    private loginRules = {
        username: [{ validator: this.validateUsername, trigger: 'blur' }],
        password: [{ validator: this.validatePassword, trigger: 'blur' }]
    }

    private passwordType = 'password'
    private loading = false
    private showDialog = false
    private capsTooltip = false
    private redirect?: string
    private otherQuery: Dictionary<string> = {}

    @Watch('$route', { immediate: true })
    private onRouteChange(route: Route) {
        const query = route.query as Dictionary<string>
        if (query) {
            this.redirect = query.redirect
            this.otherQuery = this.getOtherQuery(query)
        }
    }
    mounted() {
        if (this.loginForm.username === '') {
            ;(this.$refs.username as Input).focus()
        } else if (this.loginForm.password === '') {
            ;(this.$refs.password as Input).focus()
        }
    }

    private checkCapslock(e: KeyboardEvent) {
        const { key } = e
        this.capsTooltip = key !== null && key.length === 1 && key >= 'A' && key <= 'Z'
    }

    private showPwd() {
        if (this.passwordType === 'password') {
            this.passwordType = ''
        } else {
            this.passwordType = 'password'
        }
        this.$nextTick(() => {
            ;(this.$refs.password as Input).focus()
        })
    }

    private handleLogin() {
        ;(this.$refs.loginForm as ElForm).validate(async (valid: boolean) => {
            if (valid) {
                this.loading = true
                try {
                    await AuthModule.Login(this.loginForm)
                    this.$router.push({
                        path: this.redirect || '/',
                        query: this.otherQuery
                    })
                } catch (e) {
                    this.loading = false
                } finally {
                    this.loading = false
                }
            } else {
                return false
            }
        })
    }

    private getOtherQuery(query: Dictionary<string>) {
        return Object.keys(query).reduce((acc, cur) => {
            if (cur !== 'redirect') {
                acc[cur] = query[cur]
            }
            return acc
        }, {} as Dictionary<string>)
    }
}
</script>

<style lang="scss">
@supports (-webkit-mask: none) and (not (cater-color: $loginCursorColor)) {
    .login-container .el-input {
        input {
            color: $loginCursorColor;
        }
        input::first-line {
            color: $lightGray;
        }
    }
}

.login-container {
    .el-input {
        display: inline-block;
        height: 47px;
        width: 85%;

        input {
            height: 47px;
            background: transparent;
            border: 0px;
            border-radius: 0px;
            padding: 12px 5px 12px 15px;
            color: $lightGray;
            caret-color: $loginCursorColor;
            -webkit-appearance: none;

            &:-webkit-autofill {
                box-shadow: 0 0 0px 1000px $loginBg inset !important;
                -webkit-text-fill-color: #fff !important;
            }
        }
    }

    .el-form-item {
        border: 1px solid rgba(255, 255, 255, 0.1);
        background: rgba(0, 0, 0, 0.1);
        border-radius: 5px;
        color: #454545;
    }
}
</style>

<style lang="scss" scoped>
.login-container {
    height: 100%;
    width: 100%;
    overflow: hidden;
    background-color: $loginBg;

    .login-form {
        position: relative;
        width: 520px;
        max-width: 100%;
        padding: 160px 35px 0;
        margin: 0 auto;
        overflow: hidden;
    }

    .tips {
        font-size: 14px;
        color: #fff;
        margin-bottom: 10px;

        span {
            &:first-of-type {
                margin-right: 16px;
            }
        }
    }

    .svg-container {
        padding: 6px 5px 6px 15px;
        color: $darkGray;
        vertical-align: middle;
        width: 30px;
        display: inline-block;
    }

    .title-container {
        position: relative;

        .title {
            font-size: 26px;
            color: $lightGray;
            margin: 0px auto 40px auto;
            text-align: center;
            font-weight: bold;
        }

        .set-language {
            color: #fff;
            position: absolute;
            top: 3px;
            font-size: 18px;
            right: 0px;
            cursor: pointer;
        }
    }

    .show-pwd {
        position: absolute;
        right: 10px;
        top: 7px;
        font-size: 16px;
        color: $darkGray;
        cursor: pointer;
        user-select: none;
    }

    .thirdparty-button {
        position: absolute;
        right: 0;
        bottom: 6px;
    }

    @media only screen and (max-width: 470px) {
        .thirdparty-button {
            display: none;
        }
    }
}
</style>
